C.F.R. » Title 30 » CHAPTER I—MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR › SUBCHAPTER O—COAL MINE SAFETY AND HEALTH › PART 75—MANDATORY SAFETY STANDARDS—UNDERGROUND COAL MINES › Subpart E—Combustible Materials and Rock Dusting

30 C.F.R. § 75.402

Rock dusting

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[Statutory Provision]

All underground areas of a coal mine, except those areas in which the dust is too wet or too high in incombustible content to propagate an explosion, shall be rock dusted to within 40 feet of all working faces, unless such areas are inaccessible or unsafe to enter or unless the Secretary or his authorized representative permits an exception upon his finding that such exception will not pose a hazard to the miners. All crosscuts that are less than 40 feet from a working face shall also be rock dusted.

Notes of Decisions
Cited in 1 case, 2015–2015 · leading case: Brandywine Explosives & Supply v. Dir., Off. of Workers' Comp. Programs, 790 F.3d 657 (6th Cir. 2015).
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Brandywine Explosives & Supply v. Dir., Off. of Workers' Comp. Programs, 790 F.3d 657 (6th Cir. 2015). “See 30 C.F.R. § 75.402 . In the context of respiratory safety, the standards explicitly regulate the concentrations of quartz dust — a type of rock dust — that may be present.”
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